Nassau County  »  11791  »  Underhill Blvd  »  575 Underhill Blvd

575 Underhill Boulevard, Syosset, NY 11791 - Property report

Also known as: 575 Underhill Blvd

Property image for 575 Underhill Boulevard, Syosset, NY 11791
static Mapbox map

Property type

Storage, Warehouse and Distribution Facilities (440.04)

Year built

1956

Acreage

16.597

Sale price

$21,471,255

General information

Unlock this property report with a free account

Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
575 Underhill Boulevard
ZIP code
11791
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
15-169-20

Owner

Find out who owns 575 Underhill Boulevard, Syosset, NY 11791. Uncover corporate and individual owners with a free account.

Building
Property type
Storage, Warehouse and Distribution Facilities (440.04)
Building sq. ft.
228,894
Buildings on lot
1
Stories
1
Year built
1956
AC
Central
Sales
Sale date
12/01/2000
Sale price
$21,471,255
Arm's length
Tax
Tax year
2026
Tax class
Zoning & Use
Zoning
Capitalization rate
Area type
Commercial/Industrial park
Lot
Acreage
16.597
Topography
Level
Land
Primary site

Area overview

Walk score
55 /100.  Somewhat Walkable
Transit score
0 /100.  Minimal Transit
Bike score
49 /100.  Somewhat Bikeable
School district
3014
Street
Paved
Traffic
Medium

View more such as transportation, nearby schools and risk designations.

Commercial Buildings

Sq. ft. Structure Grade Year built Stories
228,894 Flex indtrl/warehouse B+ 1956 1
Floor distribution
Floors Sq. ft. Use Construction Condition Exterior wall Heating Air conditioning Plumbing
01-01 36,605 Flex building Central
01-01 24,038 Flex building Central
01-01 61,138 Flex building Central
01-01 75,692 Flex building Central
02-02 31,421 Offices 20,001 - 50K sf Central
Ownership

Ownership information for 575 Underhill Boulevard, Syosset, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 575 Underhill Boulevard, Syosset, NY 11791

Sale date Sale price Buyer name Seller name
12/01/2000 $21,471,255 XXXX XXXXXX XXXXXXXXXX XXXXX XXX XXXXX XXXXXXXXXX XX
01/31/1997 $19,594,896 XXXXX XXXXXXXXXX, XX XXXXXX XXXXXXXXX XX

*Most recent sales on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
01/27/2025 - R Other
(Mortgage agreement)		 XXXXXXXX XXXX XXXXXX XXXXXX
01/27/2025 - R
12/01/2024 - D		 Mortgage
(Mss-mortgage no fees)		 XXX XXXXXXXXX XXXXX XXX XXXXXX XXXXXX
08/14/2024 - R Deed agreement
(Agreement deed)		 X XXXXXXXXX XXXXX XXX
08/14/2024 - R Deed agreement
(Agreement deed)		 X XXXXXXXXX XXXXX XXX
02/16/2023 - R Other
(Mortgage agreement)		 XX XXXX XXXXX XXXXX XXX XXX XXXX XXXXXXXXX XXXX
02/16/2023 - R
03/05/2021 - D		 Mortgage
(Substitute mortgage B)		 X XXXXX XXXX XXXXX XXX XXX XXXX XXXXXXXXX XXXX
08/16/2018 - R Deed agreement
(Agreement deed)		 XXXXXXXXXX XXXXXXXXXXX XXXXXX X XXXXXXXXX XXXXX XXX
08/16/2018 - R Deed agreement
(Agreement deed)		 XXXXXXXXXX XXXXXXXXXXX XXXXXX X XXXXXXXXX XXXXX XXX
06/05/2018 - R
05/09/2018 - D		 Deed XXX XX XXX XXX XXXXXXXXX XXXXX XXX
02/13/2007 - R
12/26/2006 - D		 Deed XXXX XXXXXX XXXXXXXXXX XX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 575 Underhill Boulevard, Syosset, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2026
Tax class
Recent tax assessments
Market value
$25,364,900
Assessed value
$253,649
Transitional assessed value
Exemptions

More about Nassau County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y change
2026 $25,364,900 $253,649 n/a
2025 $28,032,700 $280,327 n/a
2024 $28,032,740 $280,327 644.549 $1,678,451 n/a
2023 $28,032,700 $280,327 n/a
2022 $28,032,700 $280,327 n/a
2021 $27,575,400 $275,754 n/a
2020 $18,530,400 $185,304 n/a
2019 $18,530,400 $185,304 n/a
2018 $18,530,400 $185,304 n/a
2017 $18,530,400 $185,304 n/a
Permits

Permit information for 575 Underhill Boulevard, Syosset, NY

No recently recorded permits for this property.

Neighborhood

Demographics by ZIP code

Total population
25,520
Median age
43.2
Average household income
$276,174
Family households
83.9%
People per household (average)
3.11
Occupied housing units
8,113
Owner-occupied units
93.5%
Median year structure built
1959
Median value mortgaged units
$968,800
Median value unmortgaged units
$878,600

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 575 Underhill Boulevard, Syosset, NY 11791 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Neighbors for 575 Underhill Boulevard, Syosset, NY

8 Dorothy St, Syosset 10 Jean Pl, Syosset 140 Eileen Way, Syosset 345 Underhill Blvd, Syosset 2 Dorothy St, Syosset 485 Underhill Blvd, Syosset 425 Underhill Blvd, Syosset 325 Underhill Blvd, Syosset 12 Jean Pl, Syosset 26 Cedar St, Syosset 6 Dorothy St, Syosset 14 Jean Pl, Syosset 475 Underhill Blvd, Syosset 313 Underhill Blvd, Syosset 150 Eileen Way, Syosset 225 Underhill Blvd, Syosset 24 Cedar St, Syosset 4 Dorothy St, Syosset 28 Cedar St, Syosset 2 Lesley Dr, Syosset

Nearby ZIP codes for 575 Underhill Boulevard, Syosset, NY

11545, Nassau County, NY 11548, Nassau County, NY 11554, Nassau County, NY 11560, Nassau County, NY 11568, Nassau County, NY 11590, Nassau County, NY 11709, Nassau County, NY 11714, Nassau County, NY 11724, Suffolk County, NY 11732, Nassau County, NY 11743, Suffolk County, NY 11747, Suffolk County, NY 11753, Nassau County, NY 11756, Nassau County, NY 11765, Nassau County, NY 11797, Nassau County, NY 11801, Nassau County, NY 11804, Nassau County, NY

Frequently asked questions

What is the year built for 575 Underhill Boulevard, Syosset, NY 11791?

The development at 575 Underhill Boulevard, Syosset, NY 11791 was built in 1956.

What is the market value of 575 Underhill Boulevard, Syosset, NY 11791?

The current market value of 575 Underhill Boulevard, Syosset, NY 11791 is $25,364,900.

What is the total square footage of 575 Underhill Boulevard, Syosset, NY 11791?

575 Underhill Boulevard, Syosset, NY 11791 has a total of 228,894 square feet.

How many active listings does 575 Underhill Boulevard, Syosset, NY 11791 have?

This address has 2 active listing(s).

Disclaimer

Copyright 2003-2026 by PropertyShark.com

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.

Sign up for a free account